Electric Garage Heaters-Which one will be best suited for you

An electric fan heater.

An electric fan heater. (Photo credit: Wikipedia)

Winter is coming , yes I know its the very first episode of “Game of Thrones” but that’s not what we are discussing here. Winter is about to make its deadly move and lot of people like you are preparing for winter and there are many posts already written by some of the amazing writers here. So if you had read them you are probably looking for a electric garage heater, if you don’t already have one or the one you have is not functional anymore. So that’s my purpose of writing this article, it will tell you about what kind of heater will be best suited for your needs and provide you with enough knowledge about the different types of electric heater available for you to buy. Please note that this article can get bit techy, but I will do my best to explain everything in easy way, so if you are not a tech-guy please bear with me. Now lets get started.

How Electric Heaters Work

You may have studied this on your science class that resistance opposes current and is responsible for electrical energy losses. The losses are dissipated as heat which is proportional to the product of square of current and resistance. The total heat dissipated in the given time “t” is                                                                                                                                                                    H = I2Rt  joules    where I is current and R is resistance.                                                                                                                                                                                                                                                                                                                   This is generally known as “Resistance heating”. There are other types of electric heating too, “Induction heating”, “Eddy current heating”, and  “Dielectric heating” but we will focus only on resistance heating because that’s what an electric heater employs.

Transfer of Heat 

Heat can be transferred by 3 means.                                                                                                                                                                                                                                                                    

  • Conduction
  • Convection
  • Radiation

I think you all are familiar with these terms, if not please comment and i will edit and re-post this article with all relevant information about them or just search these terms on Google or Wikipedia.

Based on the modes of transfer of heat, there are two types of electric garage heaters.

(1) Radiant/Infrared Heaters: 

These heaters will heat the body but not the room, you will feel heat if you are right under the heater element. These heaters are great if you just want to heat your bench area while you are in your garage on Sunday.

(2)Convection Heater: 

These heaters will heat your entire room. Because these heaters employs heating via convection, they may have a fan which circulates the heat all around the room.

There are 4 types of convection heaters 

Unit Heaters: Recommended for larger garages or rooms, where more airflow is required. They are  fast in heating but can be bit loud due to its powerful  fan. Unit heaters can be mounted on wall as well as ceiling.

Wall Heaters: Recommended for medium to small garages. It also consists of a fan but not as powerful as the Unit heater has. It can only be mounted on wall.

Ceiling Heaters: They are ideal where there is not much wall space. They do not engulf your working space, as they are mounted on your ceiling and comprised of a powerful fan. They can efficiently heat up your entire room.

Plug In Portable heater: These heaters get their supply from your conventional 120V wall socket. They are free to move and you can put it on your work bench or anywhere you want.


Electric garage heaters comes in either 120V or 240V. 120V heaters have wattage ratings from 500 to 1500 watts, suitable for small rooms or garages. 240V heaters are powerful and have wattage ratings from 100 to 50000 watts and are best if you want high performance. Please remember that never use 120V one with 240V supply, this will burn the heating element as your heater will try to deliver 4 times of its rated wattage, so it will get damaged. Similarly when you use 240V heater with 120V , you will only get 25% of the performance.


All heaters now a days comes equipped with thermostat. Thermostat gives you the ability to control heating i.e you can control temperature of your room. The knob is provided and you can set it to your desired temperature, the heater will act accordingly and maintain your desired temperature.

So that’s all, I am certain that now you will be able to select best heater as per your needs. The one which will serve you the best.  


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